At the 11th birthday celebration of the appliance maintenance forum, I was quite touched. I learned a lot in the forum and got help from my colleagues. I grew up with the forum! thank you very much! Sending a post here hopes to have a little effect on the novice.
Overhaul a JAV32HD690 LCD TV, the power-on red light is on, press the remote control green light to illuminate, the boot LOGO appears, and the automatic shutdown will start immediately, so that the machine is automatically turned on and off. The open cover detection 12V, 5V, 1.8V are stable and no fluctuation, and each filter capacitor has no drum leakage, it seems that the power supply part is normal. Only the upper screen voltage of 12V and the backlight voltage fluctuate accordingly. Unplugging the screen line and the LED light line remains faulty. It seems that the problem is undoubted on the motherboard.
This machine adopts PC1 three-in-one motherboard. In view of hardware damage or software program error, it may cause the fault, so it is soft and hard, first try the program.
First, copy the BIN file of the machine program to the root directory of the U disk.
Second, insert the U disk into the USB port of the motherboard, power on, red light is on, the CPU will automatically upgrade after detecting the upgrade program. At this time, the traffic lights alternately flash slowly, and then alternately flash quickly, and the upgrade is successful.
Third, unplug the U disk, power on, no longer automatically switch the machine, prove that the brush machine is successful, the original program is indeed damaged.
The green light is on and off, no longer shutting down. But the installation screen to see the boot screen is inverted, and another change to a formal program brush, but the motherboard is not able to detect the U disk, simply can not brush, it seems to have a hard brush!
Fourth, find the program chip 25Q32 (flash)
Removed
Five, programmers wait, tens of dollars of bargains, will be able to use it!
Insert the flash chip into the computer
Open the programmer running program and open the BIN file of the dressing software to be burned.
Click the "Auto Burn" button, when the green progress bar reaches 100%, the programming is successful!
Remove the chip and replace it, the image of the test machine is restored to normal, and the programming process is completed! Attached to the machine dressing program, I do not know if I can upload!
LCD TV JAV32HD690 data bin_v59s (Z) JAV32HD690 formal installer
LCD TV JAV32HD690 data bin_v59s(Z).rar
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